US3742278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low pressure mercury vapor gas discharge lamp with amalgam
Assignee: Individual
•
Filing: 1971-04-22
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Granted: 1973-06-26
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Expires: 1991-04-22
Abstract
Abstract Low-pressure mercury-vapor gas-discharge lamps, particularly fluorescent ones, of high intensity and high specific power, containing an amalgam of the formulation: MERCURY15 - 20 AT. PER CENT CADMIUM53 - 38 AT. PER CENTTIN20 25 AT. PER CENT BISMUTH12 - 17 AT. PER CENT
Inventors
- 👤 V Tyabirdin
- 👤 G Snitka
- 👤 N Vasyagin
- 👤 J Shindelman
- 👤 G Akulova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:13
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
17 words
A mercury vapor gas-discharge lamp as claimed in claim 1 which includes means rendering the lamp fluorescent.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |